A Sentinel TotalGuard filter helps protect heating systems against wear and premature failure of pumps, valves and heat exchangers. fitted to the return pipe on the boiler will protect the system against all types of debris, both magnetic and non-magnetic. Sentinel X 800 is a heavy-duty cleaning formulation designed to remove corrosion deposits and scale from boiler heat exchangers, radiators, and pipework in domestic central heating systems. Sentinel X 100 Inhibitor provides protection for clean hydronic heating systems against limescale and corrosion.

• High quality daul seals for a leak free filter
• Cleans simply by flushing
• 5 years guarantee
• Pack contains total guard filter, X100 and X800 1 litre chemicals